In the recent season of the Netflix series "Stranger Things" one of the characters is shown checking out books from the library to research why magnetic fields are behaving strangely in her small town, one of the books shown at the top of the stack is "Electromagnetic Slow Wave Systems":
Looks like heavy stuff, the only review states "I don't understand a damn thing in it."
It looks related to research into the properties of helical wave-guides at microwave frequencies which seemed to be a hot area of research in the mid 60s.
TWTs are based on slow-wave structures, so they're still pretty important. The math isn't that hard if the structure is vaguely regular--the helical-core transmission line is covered in Ramo, Whinnery, & Van Duzer, for instance, which is an upper-level undergraduate book.
Dielectric slow-wave structures have their uses in optics as well, especially for enhancing nonlinearities and other stuff such as particle acceleration.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510
http://electrooptical.net
http://hobbs-eo.com
I'll see if I can screen-cap the particular scene, it was a stack of about 8 or 10 vintage books on various EM topics that all looked kinda interesting.
Whoever was working in the prop department that day seemed to have a good selection to pull from
"This is an excellent book, concerned primarily with the wave guiding properties of certain classes of periodic structures. In particular, the author says heavy stressu pon coupled cavity chains and distributed helices, in contrast to the lumped electric filter and crystal lattice slow wave structures treated in Brillouin?sl classic work. Going far beyond previous textbook efforts in the area of distributed slow wave systems, Prof. Bevensee has brought together a large amount of detailed information, the final two-thirds of which was hitherto unpublished. The book should be of particular interest for persons with prior experience in the area, since little time is spent on introductory material and the analysis immediately proceeds at a high level.
After a brief introduction, the book opens with a chapter which describes some basic properties of slow wave systems and introduces the central problem of finding dispersion curves. (Incidentally, all chapters are initiated with very helpful synopses which outline the chapters and show their relationship to preceding ones.) Chapter I1 describes the helix in the traditional way and other assorted structures are treated briefly. In the next three chapters, the author warms up to his main topic: coupled cavity chains..
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